//+
SetFactory("OpenCASCADE");
//+
Cylinder(1) = {0, 0, -2.5, 0, 0, 5, 0.5, 2*Pi};
//+
Cylinder(2) = {0, 0, -2.5, 0, 0, 5, 1, 2*Pi};
//+
Cylinder(3) = {0, 0, -2.5, 0, 0, 5, 1.2, 2*Pi};
//+
// BooleanDifference{ Volume{3}; }{ Volume{2}; }//+
Coherence;//+
Transfinite Curve {1, 3} = 20 Using Progression 1;
//+
Transfinite Curve {4, 7, 6, 9} = 30 Using Progression 1;
//+
Transfinite Curve {8, 5, 2} = 20 Using Progression 1;
